Rajah di sebelah menunjukkan sisi empat Q, titik L dan L'. Diberi bahawa, L' ialah imej bagi L di bawah satu transformasi T. Diagram shows a quadrilateral Q, point L and L'. Given that, L' is the image of L under a transformation T. (i) Huraikan transformasi T.
Describe transformation T.

(ii) Lukis imej bagi sisi empat Q di bawah transformasi yang sama. Draw the image of quadrilateral Q under the same transformation.​

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

The coordinates r(1, -3), s(3, -1) t(5, -7) form what type of polygon? a right triangle an acute triangle an equilateral triangle an obtuse triangle